Toni Kroos admitted Germany must take maximum points from their final two group games to get their World Cup defence back on track.

The holders and four-time winners suffered a shock opening 1-0 defeat to Mexico in their opening game of the tournament in Moscow.

Defeat means Joachim Loew's side must beat Sweden and Korea to stand any chance of topping Group F and avoiding a potential last 16 tie against five-time winners Brazil.

"We're under real pressure now," said Kroos. "We have to get six points from the next games.

"We didn't play well enough. Overall, we had our chances, but we weren't able to score.

Mesut Ozil, Julian Draxler and Toni Kroos must pick themselves up after this defeat (Image: REUTERS)

"We lost the ball up front far too easily and Mexico had always two or three people up front, who we failed to block efficiently."

Defender Mats Hummels hinted at problems within the squad by citing a lack of collective responsibility and a gung-ho attitude for their defeat.

MOSCOW, RUSSIA - JUNE 17: Mats Hummels of Germany runs with the ball during the 2018 FIFA World Cup Russia group F match between Germany and Mexico at Luzhniki Stadium on June 17, 2018 in Moscow, Russia. (Photo by Alexander Hassenstein/Getty Images) (Image: 2018 Getty Images)

"If seven or eight players attack, it's clear the offensive force is greater than the defensive stability,” said Hummels.